Problem I got is, I'm sure that will cause alot of traffic on the network first thing in the morning when everyone is logging on. Was hoping to have it -somewhat- automated, so that one the archive has run on a PC, outlook would then copy the pst to a location on the network but get this set so say over a week it would be 10 users per day.

Write a small script that copies the pst to the network location, and create a scheduled task to run this script once every night at 3am for example. You can assign your logon credentials to the task so you don't even need to be logged in for the script to run every night.

That I could, I did try using an app that would monitor the folder for files that have changed, then copy the changed file over. Only problem with that was outlook would edit the file every couple of minutes.
Can't really run it at night though, I guess there could be a script that runs at say 6pm then shuts down each PC when the transfer has finished.